Introduction📚 |
What is a package manager in Linux? |
What is a package? |
Different kinds of package managers |
Task : Check the status of docker service in your system (make sure you completed above tasks, else docker won't be installed) |
Task : Stop the service jenkins and post before and after screenshots |
Task : Read about the commands systemctl vs service |
*Conclusion⚔️🎉 |
Introduction📚
Welcome,Connection to day 7 of thrilling #90daysOfDevops challenge, As a DevOps engineer, your journey involves deploying and managing powerful tools that shape the digital landscape. Today, let's dive into the installation of Docker🐳 and Jenkins🏗️ using package managers, and then wield the mighty systemctl for service management. Strap in, and let's embark on this DevOps adventure!
What is a package manager in Linux?
In simpler words, a package manager is a tool that allows users to install, remove, upgrade, configure and manage software packages on an operating system. The package manager can be a graphical application like a software center or a command line tool like apt-get or pacman.
To understand package manager, you must understand what a package is.
What is a package?📦
A package is usually referred to an application but it could be a GUI application, command line tool or a software library (required by other software programs). A package is essentially an archive file containing the binary executable, configuration file and sometimes information about the dependencies.
Different kinds of package managers
Package Managers differ based on packaging system but same packaging system may have more than one package manager.
- a. apt (Debian/Ubuntu):
Importance: Debian-based systems are prevalent in many server environments, making apt a key tool for package management.
sudo apt-get install package_name
b. yum/dnf (Red Hat/CentOS):
Importance: Commonly used in enterprise environments, understanding yum or dnf is crucial for managing packages on Red Hat-based systems.
sudo yum install package_name
c. Pacman (Arch Linux):
- Importance: Arch Linux and its derivatives are popular among tech enthusiasts, making Pacman valuable for certain environments.
sudo pacman -S package_name
Task : Check the status of docker service in your system (make sure you completed above tasks, else docker won't be installed)
sudo apt update
sudo apt-get install -y docker.io
Checking Docker Service Status:
systemctl status docker
✅ Ensures Docker is smoothly sailing on your system.
sudo apt install -y docker.io
Jenkins Installation on Ubuntu:
sudo apt update
sudo apt install -y jenkins
Task 2 :Stopping Jenkins Service
Stopping Jenkins Service:
sudo systemctl stop jenkins
🚨 Halts Jenkins service like a captain giving the pause command.
Task :3:Read about the commands systemctl vs service
Decoding systemctl vs service Commands 🔍🔄
systemctl:🛠️ Controls the systemd system and service manager.
🕵️ Used for managing services, examining logs, and more.
🔑 E.g.,
systemctl status docker
service:🤹♂️ High-level command to manage services.
🔄 Often a symlink to
systemctl.🔑 E.g.,
service jenkins status
Conclusion🎉
With package managers, Docker, Jenkins, and the systemctl wizardry at your disposal, you're well-equipped to navigate the Linux seas. Whether you're deploying containers or orchestrating services, these tools will be your steadfast allies on your DevOps journey. May your deployments be smooth, your services robust, and your command-line adventures legendary! 🚢💻🔧🌐💡 Keep up the fantastic work, and get ready for more thrilling adventures that lie ahead! 💪🌟
🙏Thanks for reading🙏